EP 3270476 B1 20200422 - SPARK PLUG
Title (en)
SPARK PLUG
Title (de)
ZÜNDKERZE
Title (fr)
BOUGIE D'ALLUMAGE
Publication
Application
Priority
- JP 2016138603 A 20160713
- JP 2017097916 A 20170517
Abstract (en)
[origin: EP3270476A1] At least one of a center electrode and a ground electrode of a spark plug includes an electrode body, an electrode tip, and a welded portion formed between the electrode body and the electrode tip. The electrode tip includes a cover layer that covers at least a side surface of a tip body, and the cover layer is formed of IrAl. On a section formed by cutting the electrode tip near a boundary with the welded portion, an area of the tip body is represented by Sa. An area of a projection on the section of a non-contact portion of an opposite surface of the tip body not in contact with the welded portion is represented by Sb. In this case, Sa - Sb corresponds to 35% or more of Sa.
IPC 8 full level
H01T 13/20 (2006.01); H01T 13/32 (2006.01); H01T 13/39 (2006.01)
CPC (source: EP KR US)
H01T 13/10 (2013.01 - US); H01T 13/20 (2013.01 - EP KR US); H01T 13/32 (2013.01 - EP US); H01T 13/38 (2013.01 - US); H01T 13/39 (2013.01 - EP KR US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3270476 A1 20180117; EP 3270476 B1 20200422; KR 20180007684 A 20180123; US 2018019581 A1 20180118; US 9853423 B1 20171226
DOCDB simple family (application)
EP 17180890 A 20170712; KR 20170087739 A 20170711; US 201715646559 A 20170711